It all would depend on who created the anime...Some companies do create too cliche and cheesy anime series, but a Harry Potter anime series..I could see that coming out pretty cool, as long as they kept things canon.

I'd imagine any of the duals would look pretty awesome.

Back in the early '90s here in the Philippines, we experienced a deluge of anime adapted from novels, such as Princess Sarah, A Dog of Flanders, and others. And all of them were faithful to the original material and treated it with respect. The Peter Pan anime took some liberties, but even that was fun.